body {
  font-family: Arial, sans-serif;
  color: #fff;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #1a2a3a, #0d1c2c);
  background-image: linear-gradient(135deg, #1a2a3a, #0d1c2c);
  background-size: 200% 200%;
}

.gradient-animation {
  animation: gradientAnimation 5s ease-in-out infinite;
}

@keyframes gradientAnimation {
  0% {
    background-position: 0% 50%;
  }

  50% {
    background-position: 100% 50%;
  }

  100% {
    background-position: 0% 50%;
  }
}


.container {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  width: 100%;
  max-width: 600px;
}

h1 {
  text-align: center;
  color: #007BFF;
}


label {
  display: block;
}


input[type="number"],
input[type="text"] {
  padding: 8px;
  margin-top: 5px;
  margin-bottom: 15px;
  border: 1px solid #ddd;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  backdrop-filter: blur(10px);
}

button {
  display: block;
  width: 100%;
  padding: 10px;
  margin-top: 20px;
  background-color: #007BFF;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.3s;
}

button:hover {
  background-color: #0056b3;
}

pre {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid #ddd;
  border-radius: 4px;
  padding: 10px;
  overflow-x: auto;
  white-space: pre-wrap;
  word-wrap: break-word;
  color: #fff;
  backdrop-filter: blur(10px);
}

#charsetOptions {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: 10px;
}

#charsetOptions input[type="checkbox"] {
  margin-right: 5px;
}